issue in SSRS report sorting [AX 2012 R2]

I was add a field position number in PurchPurchaseorder report. Know i want to sort that report according to my customized field. When data was inserted in PurchPurchaseorderTmp, it was sorted according my field but when it populate on report it was according to LineNumber.

The report design is precision not Auto design.

Please help to solve that issue.

You can use order by and group by options in autodesign , if you are using precision design You can directly use order by in Precision design itself.